So this team is kinda trash but has been doing better for me than it has any right to. Z move on Dragonite and scarf blacephalon are probably better, a different mamo set might be a good idea, and stored power on lati is probably better but whatever, it got me to like 1600. Anyway, I present to you gen 7 drag mag ft. Mamo and sub pain split blacephalon.
https://pokepast.es/f726d1dd472cecda
https://pokepast.es/f726d1dd472cecda